Preheat oven to 350 degrees

Prep your pumpkin: With a sharp knife, cut off the lid and scoop out the seeds and membranes. Drizzle some olive oil on the inside with some black pepper. Bake for 1 1/2 to 2 hours (for a 5-pound pumpkin), slightly more or less time depending on the size of your pumpkin. Just check it from time to time. When the pumpkin is tender, remove it from the oven and take off its lid.

Increase oven heat to 400 degrees

In a bowl, mix the grated cheeses with the corn flour, garlic, salt and pepper until completely coated. Add the cheese mix into the pumpkin, pour the wine on top and return the pumpkin to the oven and bake for 20-30 mins or until the fondue is melted and bubbling. Take out and stir to fully combine.